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Finding the Fourth Proportional to 70,900.70, 97,838.56 and 40,688.51

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Solution

The fourth proportional to 70,900.70, 97,838.56 and 40,688.51 is: 56,147.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,900.70 : 97,838.56 = 40,688.51 : x
  2. Step 2: Convert to fraction form
    70,900.70/97,838.56 = 40,688.51/x
  3. Step 3: Cross multiply
    70,900.70x = 97,838.56 × 40,688.51
  4. Step 4: Simplify right side
    70,900.70x = 3,980,904,636.03
  5. Step 5: Solve for x
    x = 3,980,904,636.03/70,900.70
  6. Step 6: Final answer
    x = 56,147.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.